VALUE PACK OF 4: Come with Tongue + Groove Router Bit + 2PCS 60inch (L:150cm) Soft Tape Measure ( Free gift ). Overall Dia. (D) 1-7/8", Bearing Dia. 7/8", Shank Dia. 1/4". Shaped with 1/2" Depth, 1/4" Stock, 1/4" Groove width. The Tape Measure is flexible and portable, great for sewing tailor cloth, home use, DIY and constructionEXCELENT DESIGN: Solid hardened steel bodies with anti kickback design and heat resistant spraying. Industrial grade micro grain carbide blade with totally enclosed & lubricatedAPPLICABLE MACHINE: Specially designed for table-mounted portable routers, woodworking engraving machine. Cannot be used in electric drill and drilling machineSUITABLE MATERIAL: Suit for woods, MDF, particle board, plywood compact panel; Avoid cutting ferrous metal and non wood materials, such as steel, iron, sand, etcPERFECT CHOICE FOR WOODWORKING: Very easy to operate, perfect choice of professionals and hobbyists. You can use it to make a drawer or other woodworking for your families